Brain: Difference between revisions
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synth reduction |
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|synthesis = | |synthesis = 96 | ||
|animated = true | |animated = true | ||
|viewerconfig = #C [[ TRACKLOOP 3 0 -1/3 THUMBSIZE 3 GPS 3 HEIGHT 480 WIDTH 480 ZOOM 27 ]] | |viewerconfig = #C [[ TRACKLOOP 3 0 -1/3 THUMBSIZE 3 GPS 3 HEIGHT 480 WIDTH 480 ZOOM 27 ]] | ||
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A {{gliders|99}} [[Glider synthesis|synthesis]] of Brain was found by [[Goldtiger997]] in November {{year|2022}},<ref name="post154110" /> solving a long-standing [[open problem]].<ref name="post22530" /> A period-690 [[gun]] with bounding box {{times|910|875}} was assembled by [[Entity Valkyrie]] in September {{year|2023}}, using the 99-glider synthesis.<ref name="post167253" /> | A {{gliders|99}} [[Glider synthesis|synthesis]] of Brain was found by [[Goldtiger997]] in November {{year|2022}},<ref name="post154110" /> solving a long-standing [[open problem]].<ref name="post22530" /> A period-690 [[gun]] with bounding box {{times|910|875}} was assembled by [[Entity Valkyrie]] in September {{year|2023}}, using the 99-glider synthesis.<ref name="post167253" /> | ||
On July 25, {{year|2024}}, [[KtT]] lowered the cost to {{gliders|97|text=97 gliders}} | On July 25, {{year|2024}}, [[KtT]] lowered the cost to {{gliders|97|text=97 gliders}},<ref name="post190588"/><ref name="j7430199942"/> with a further reduction by [[Chris857]] on July 28, {{year|2024}}, to {{gliders|96|text=96 gliders}}.<ref name="post190792"/><ref name="j7445243221"/> | ||
{{EmbedViewer | {{EmbedViewer | ||
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<ref name="j7430199942">{{CiteCatagolueJob|job=7430199942|date=July 25, 2024}}</ref> | <ref name="j7430199942">{{CiteCatagolueJob|job=7430199942|date=July 25, 2024}}</ref> | ||
<ref name="j7445243221">{{CiteCatagolueJob|job=7445243221|date=July 28, 2024}}</ref> | |||
<ref name="post22530">{{LinkForumThread | <ref name="post22530">{{LinkForumThread | ||
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|author = KtT | |author = KtT | ||
|date = July 25, 2024 | |date = July 25, 2024 | ||
}}</ref> | |||
<ref name="post190792">{{LinkForumThread | |||
|format = ref | |||
|p = 190792 | |||
|title = Re: Small Spaceship Syntheses | |||
|author = Chris857 | |||
|date = July 28, 2024 | |||
}}</ref> | }}</ref> | ||
</references> | </references> | ||
Revision as of 14:46, 28 July 2024
| Brain | |||||||||
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| View static image | |||||||||
| Pattern type | Spaceship | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 62 | ||||||||
| Bounding box | 17 × 11 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 3 (mod: 3) | ||||||||
| Speed | c/3 | c/3 | ||||||||
| Heat | 45.3 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Bell | ||||||||
| Year of discovery | 1992 | ||||||||
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- For the cellular automaton sometimes called Brain, see OCA:Brian's Brain.
Brain is a c/3 orthogonal spaceship found by David Bell in May 1992. It provides a weak spark at its back which can sometimes be used to perturb objects, such as a glider.
| Brain perturbs a glider to produce a honey farm (click above to open LifeViewer) RLE: here Plaintext: here |
Construction
A 99-glider synthesis of Brain was found by Goldtiger997 in November 2022,[1] solving a long-standing open problem.[2] A period-690 gun with bounding box 910 × 875 was assembled by Entity Valkyrie in September 2023, using the 99-glider synthesis.[3]
On July 25, 2024, KtT lowered the cost to 97 gliders,[4][5] with a further reduction by Chris857 on July 28, 2024, to 96 gliders.[6][7]
| The 99-glider synthesis of Brain[1] (click above to open LifeViewer) RLE: here Plaintext: here |
See also
References
- ↑ 1.0 1.1 Goldtiger997 (November 25, 2022). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ gmc_nxtman (September 13, 2015). Re: Thread For Synthesisable Spaceship Guns (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (September 17, 2023). Re: Construction practice (discussion thread) at the ConwayLife.com forums
- ↑ KtT (July 25, 2024). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#7430199942) (July 25, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
- ↑ Chris857 (July 28, 2024). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ shinjuku (#7445243221) (July 28, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.
External links
- Brain at the Life Lexicon
- Brain at Adam P. Goucher's Catagolue
- 62P3H1V0.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Spaceships with 62 cells
- Periodic objects with minimum population 62
- Patterns with 62 cells
- Patterns found by David Bell
- Patterns found in 1992
- Patterns that can be constructed with between 90 and 99 gliders
- Spaceships
- Spaceships with period 3
- Orthogonal spaceships
- Spaceships with speed c/3
- Spaceships with unsimplified speed c/3
- Spaceships with heat 45
- Spaceships with mod 3
- Patterns with bilateral orthogonal symmetry